Microwave rack



FIG. 1 is an overhead view of the microwave rack;

FIG. 2 is a bottom view of the microwave rack;

FIG. 3 is a side view of the microwave rack, the opposite side view is identical; and,

FIG. 4 is a front elevation view of the microwave rack, the rear elevation view is identical. 

The ornamental design for a microwave rack, as shown and described. 